The three-dimensional (3D) imaging techniques of robotic vision in the field of intelligent manufacturing robot vision perception are reviewed. The characteristics and limitation in practical applications of some typical robot vision imaging methods are systematically summarized. The content involves time-of-flight imaging, point and line scanning imaging, chromatic confocal imaging, structured light projection imaging, deflectometric imaging, monocular and multi-view stereo imaging, and light field imaging. The tree map of various robotic vision imaging methods are drawn. The best 3D imaging methods of eye-in-hand robotic system are discussed.